fib_trie: remove potential out of bound access

[~andy/linux] / net / ipv4 / fib_trie.c

diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c
index 108a1e9c9eac388515530bb790d0e56e4dba0bfd..3df6d3edb2a15a98cb0e90a4e5ed935f42f15f1c 100644 (file)
--- a/net/ipv4/fib_trie.c
+++ b/net/ipv4/fib_trie.c
@@ -71,7 +71,6 @@
 #include <linux/init.h>
 #include <linux/list.h>
 #include <linux/slab.h>
-#include <linux/prefetch.h>
 #include <linux/export.h>
 #include <net/net_namespace.h>
 #include <net/ip.h>
@@ -1761,10 +1760,8 @@ static struct leaf *leaf_walk_rcu(struct tnode *p, struct rt_trie_node *c)
                        if (!c)
                                continue;
 
-                       if (IS_LEAF(c)) {
-                               prefetch(rcu_dereference_rtnl(p->child[idx]));
+                       if (IS_LEAF(c))
                                return (struct leaf *) c;
-                       }
 
                        /* Rescan start scanning in new node */
                        p = (struct tnode *) c;